Objective With growing recognitions of the significance of benefit finding (BF) in cancer practice, research has increased to explore factors that may influence BF in the cancer context. Few studies have focused explicitly on factors influencing BF from the dyadic perspective of cancer patient (CP)‐family caregiver (FC) dyads. The objectives of the study were to examine BF relationship between CPs and FCs and to investigate factors that may modify the BF relationships between CPs and FCs. Methods Participants consisted of 772 dyads of CPs and FCs.